A243430 Primes of the form 2^n + 43.

47, 59, 107, 4139, 16427, 65579, 262187, 16777259, 302231454903657293676587, 4835703278458516698824747, 20769187434139310514121985316880427

Offset: 1

Author

Vincenzo Librandi, Jun 05 2014

Keywords

• nonn

Comments

Associated n: 2, 4, 6, 12, 14, 16, 18, 24, 78, 82, 114, 234, 268, 286, ...

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..19

Crossrefs

Cf. similar sequences listed in A243429.

Programs

Magma

[a: n in [0..500] | IsPrime(a) where a is 2^n+43];

Mathematica

Select[Table[2^n + 43, {n, 0, 500}], PrimeQ]